Ofpici



B.- F. JACKSON. v SELF PROPELLING BOAT.

APPLICATION FILED SEPT. 27, 1918.

1,304 318. Patented May 20, 1919.

2 SHEETS-SHEET 1.

a ATTORNEY B. F. JACKSON. IYSELF PROPELLING BOAT. APPLICATION FILED SEPT-'27. 191s Patented May 20, 1919.

2 SHEETS-SHEET. 2.

I I I INVENTOR fl i A T TORNE 1-" nnnuum r. .mcxson, or vnnsA'ILLns, inniana.

SELF-PBOPELLING Boar,

Specification of Letters Patent.

Applibation filed September 1918. Serial No. 255,907.

. To all whom it may concern:

Be it known that I, BENJAMIN F. JAoK soN, a citizen of the United States, residing in the city of Versailles and State ofIndiana, have invented new and useful Improvements in Self-Propelling Boats, of which the following is a specification, reference being had to the accompanying drawings.

This invention pertains to self-propelling boats, and has for its object the production of a device of this character which will be automatically operated through the force and vibration of the waves in such a manner as to propel the boat across the water.

A further object is to produce this device in a simple, practical and eflicient form.

With these objects in view, attention is called to the accompanying drawings," wherein- Figure 1 represents a longitudinal elevation of a boat floating in the water and properly equipped with this apparatus;

Fig. 2 is a plan view of the propelling apparatus;

Fig. 3 is an end view of the propelling apparatus and a portion of the boat.

Fig. 4, a detail of a set of the propeller blades, showing same in open position and ready to move forwardly through the water;

Fig. 5, a similar view, showing the blades" closed and'ready topress backwardly against the water in order to propel the boat forward;

Fig. 6, a detail of the air piston or shock absorber system located between the boat sections in order to absorb the shock resulting from the oscillation of said sections.

Referring more particularly to the drawings, my invention consists of two buoyant boat sections 1 and 2' hinged together transversely and medially by means of suitable hinge members 3 and 4 located on opposite sides of the sections; These hinge members 3 and 4 are located, as shown, near the top of the buoyant sections, the result of which arrangement is that said sections infloating upon the water are acted upon by the waves to cause a relative oscillating or reciprocating' motion between said sections, and so, that the ends 5 and 6 of said sections oscillate toward and from each other, moving upon the pivotal links 3 and 4. In order to prevent the sudden shock which would otherwise result between the abutting ends 5 and 6, suitable shock absorbers as 7 and 8 are located respectively below and above the pivotal links 3 and 4.

Uponthe bottom of %e boat supported by suitable stays and braes as 9 and 10, and located one toward e ac h side of the rear section 2, are the propelling members 11 and 12. Each propelling member is made up of lonf'tudinal and parallel bars as 13, 14, 15 and 16, pivotally connected at the points 17, 1s, 19, 20, 21, 22, 23 and 24 to the horizontally disposed lever arms 25, 26, 27 and 28. Said lever arms are in turn pivotally connected at the points 29, 30, 31 and 32 to the ends of the braces 9. Swingingly mounted fromthe bars 13 and 14 upon one side, and 15 and 16 upon theothemside, extend the horizontally disposed outstanding propeller arms 33 and 34. Thesea rms are pivotally connected to the inner bai's 13 and 15 at the points 35 and 36, and pass loosely through the outer bars 14 and ldathrough the slots 37 and 38. This arrangement and mounting enables the bars 13 and'14 on one side, and 15 and 16 upon the other side to reciprocate back and forth rpon the pivotal points 29, 30, 31 an dg32, and so reciprocating, to cause the propellerarms 33 and 34 to likewise move forward and backward alternately. Upon each set of extended propeller arms 33 and 34 are mounted a series of shutter-like propeller blades 39. These propeller blades are disposed vertically, and are hingedly mounted upon the propeller arms 33 and 34 from their forward edges, as at 41, and in such manner that as the propeller arms advance forwardly through the water. the propeller blades Will be automatically forced open, so as to pass easily through the water, and contrariwise when the propeller blades reach their forwardmost position and start to move backwardly, said blades will by reason of the'pressure of the water ante matically close, and thereby offer an an broken propelling surface against the water, resulting in propelling the boat forwardly through the water.

Pivotally attached to the forward levers 25 and 26 from the points 43 and 44 are the forwardly extending power transmission arms 45 and 46, and the forward ends of these arms are pivotally connected at the points 47 and 48 to the lugs 49 and 50 rigidly mounted upon the forward section 1. at points nearthe bottom and to either side thereof. By this arrangement, as the boat Patented May 24), 19123. I

tions between the two sections and prevent any abrupt shocks or" contact.

The apparatus as described may he located directly upon the bottom of shallow draft boat sections. Vi here sections of deeper draft are employed, the apparatus I be mounted upon either sins of the section and for enor upwardly along the to enable the Wave action to have too er client upon the Beret-us. nile I have herein described a o "ein of ms device for the purpose inti-znded es donned i th appended claims.

ll 'lnit if clein to be new and patenteble is:

1. A self propelling boat, comprising a plurality oi boot sections connected for reciprocating motion; a, frame mounted in connection with certain boot sections; a plurality of reciprocating propeller arms incl. .ted in the frame; a plurality of propeller blades hinged to each of said propeller arms end adopted to open for edgewise formotion through the Water and to close fiat-Wise for reverse backward motion; and a plurality of power transmission arms connecting said propeller arms with certain. other boot sections so as to t onsmit the oscilleting motion. between the boat sections to said propeller arms.

self propelling host, comprising a plurality of cost sections connected for re ciproceting motion; a frame mounted in and 2, whereby the power.

ling host comprising a plurality of boat sections connected for re ciproca-ting' motion; a frame mounted in connection with certain sections; a. plurality oi? reciprocating pro 'icller arms mounted in frame; it plurality propeller blades hinged to each of said propeller arms and adopted to open for edge- Wise forward motion through the'wetcr and to close fizitwise for reverse backward n1olion; ilurzility power t-rz'insmission erms connecting said. propeller arms with certain other host sections so to transmit the oscillating motion between the boat sections to said pr: 1

ciler arms; and aplurelity of shock absorbers mounted between the boat sections so as to neutralize the shocks.

A self propelling boot, comprising two best sections connected on a medial transverse line from their upper sides; a frame mounted from one boat section; a plurality of propeller arms pivotelly mounted in the frame for lever-like reciprocating motion; a plurality of propeller blades hinged to each propeller arm so as to open for edge- Wise forward motion through the Water and to close'fiutwise or backward motion; power transmission arms connecting the inner ends of said propeller arms with the other boat section, so as to transmit the oscilleting motion between the boat sections to said propeller arms and blades.

BENJAMEN F, JACKSON. Witnesses F, M. 'lzromrson, Eisner W. Rionnrrs. 

